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Re-optimize FYL2X for reduced precision x87 path#5491

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pmatos wants to merge 3 commits into
FEX-Emu:mainfrom
pmatos:opt/FEX-f64_fyl2x
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Re-optimize FYL2X for reduced precision x87 path#5491
pmatos wants to merge 3 commits into
FEX-Emu:mainfrom
pmatos:opt/FEX-f64_fyl2x

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@pmatos pmatos commented May 13, 2026

Post box64 comparison, we reoptimize fyl2x and add jit dispatch for fyl2xp1. This should now match box64 performance on these operations.

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